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Modelling sedimentation-consolidation in the framework of a one-dimensional two-phase flow model

Julien Chauchat, 20/12/2012

During this short seminar, I will present a one-dimensional vertical two-phase flow model for sedimentation-consolidation process. The model is based on solving the continuity and momentum equations for both fluid and solid phases.

After reviewing the main physical processes involved in the cohesive and non-cohesive cases I will show some validation results based on a comparison with detailled experimental datas. The reliability of the proposed model is illustrated from an analysis of the momentum balances at different stages during the process. Finally, the proposed closure laws and numerical algorithms are shown to be able to quantitatively reproduce sedimentation of non-cohesive and sedimentation-consolidation of cohesive sediments, including mud.